Tape pulling device



Oct. 30, 1934. A. D. ElTZEN 1,978,421

TAPE PULL I NG DEVICE Original Filed Dec. 28, 1928 INVENTOR a .41 J1 40.62274, BY

049W; ATTORNEY Patented oer. 30, 1934 PATENT OFFICE 1,978,421 TAPE PULLING DEVICE August D. Eitzen, Rockville Centre, N. Y., assignor to News Projection Corporation, New York, N. Y., a corporation of New York Application December 2a, 1928, Serial we. 329,028

' I Renewed January 10, 1934 14 Claims.

This invention relates to tape pulling devices in general and more especially to tape pulling devices which are electrically or magnetically controlled.

Among the objects of the present invention it is aimed to provide an improved tape pulling device including a tape pulling roller, an electric motor, and a magnetic clutch for connecting the tape pulling roller to the electric motor.

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description of specific embodiments thereof illustrated in the accompanying drawing in which Figure 1 is a diagrammatic view of one embodiment in which the switch for the magnetic clutch is controlled by the presser arm of the ticker;

Fig. 2 is a diagrammatic view of a portion of another embodiment in which the switch for the magnetic clutch is controlled by the loop formed in the tape between the ticker and the projector; and

Fig. 3 is a portion of still another embodiment showing another relation of the several connecting elements between the electric motor and magnetic clutch.

In the embodiment illustrated in Fig. 1, the switch 1 of the ticker is connected to, the outlet plug 2 representing a source of telegraphic impulses by means oi. the electric conductor 3 and is connected to the magnet 4 of the ticker by the electric conductor 5. The magnet 4 is connected by the conductor 6 to the outlet plug 2. It is to be'understood, however, that the aforesaid electric connections are merely illustrative of the relation of the main ticker switch and the ticker magnets in general. a

The magnet 4 when energized is adapted to attract the armature 7 of the presser arm 8, which is mounted to pivot about the pin 9 extending through the bracket 10. The presser arm 8, as illustrated, is preferably provided with a spring 11 which normally urges the free end of the presser arm 8 into engagement with the stop pin 12.

The presser arm 8, in the present instance is provided with a contact pin 13 having a contact head 14 formed at the end thereof to reciprocate between the contact blades 15 and 16 and engage the projecting ends of ese blades 15 and 18 whenthe presser arm 8 i raised by means of the magnet 4. When so raised, the V magnet 17 is'energized due to the fact that the contact blade 16 is connected to the magnet 1'1 by the' electric conductor 18 and that the contact blade 15 is connected to the magnet 17 by means of the conductor 19, the source of current supply by way of the outlet plug 20 and electric conductor 21. q

The magnet 17 when energized attracts the armature 22 which is pivotally connected at 23 to the standard 24. The armature 22 is provided with an extension 25 which is pivotally connected by means of the plunger 26 to the piston 27 slidably mounted in the cylinder 28. The cylinder 28 is adapted to be supplied with oil which passes downward from the upper end of the cylinder 28 to the lower end of the cylinder 28 through the passage 29 formed in the piston 27, but is prevented from passing through the passage 29 in an upward direction from the lower end of the cylinder 28 into the upper end of the cylinder 28.

When the piston 27 moves downwardly, the 8 check valve 30 obstructs the passage of the oil up through the passage 29 and compels the same to pass through the restricted passage 31 from the lower end of the cylinder 28 into the upper end of the cylinder 28. The restricted passage 31 is provided with a set screw 32' to regulate the passage of oil through the passage 31. The extension 25 of the armature 22 is also provided with a spring.33 normally to retain the piston 27 in the lower end of the cylinder 28 and the armature 22 separated from the magnet 1'7. Preferably the tension of the spring 33 is made adjustable by the adjustment of the screw 102.

The armature 22 is provided with a yieldable contact plate 34 adapted to engage the contact plate 35 secured to the side of the bracket 36. The-contact plates 34 and 35. are connected to the contact rings 37 and 38 respectively, the contact plate 34 being connected to the contact ring 3'7 by means of the conductor 39, the source oi. current supply by way of the outlet plug 40 and conductor 41, and the contact plate '35 being connected to the contact ring 38 by means of the conductor 42. The rings 37 and 38 constitute part 01' the magnet 43 which is adapted to cooperate with the face 44 of the clutch disk 45 freely mounted on the shaft 46.

The disk 45 has secured thereto the pulley 47 which is connected to the pulley 48 by the belt 49. The pulley 48 is mounted on the shaft 50 of the motor 51. The motor 51 is conn ted to 5 the outlet plug 52 by means of the cond or 53 10 connected to one of its poles and by m or the resistance 54, condenser 55 and cond ctor 56 mesh with the worm wheel 58 mounted in the housing 59. The worm wheel 58 is mounted on the shaft 60 which has secured thereto the tape drawing roller 61 in engagement with the tape T. Resiliently to maintain the magnet 43 in engagement with the disk 45 when not energized, the spring 62 is provided which is compressed between the screw member 63 and the abutment 64 which engages the end of the hub 65 of the magnet 43. This spring 62 exercises sufficient tension on the magnet 43 to permit the magnet 43 fixed to the shaft 46 to be urged in a rotative direction with the disk 45 when the magnet 43' is not energized. The tension of the spring 62, however, is not sufficient to lock the magnet in engagement with the disk 45 so that the disk 45 could overcome the resistance of the tape T when at rest to pull it along and tend to tear it. This tension, however, is of advantage to maintain the tape T taut when the ticker is at rest and thus facilitate a smooth projection even when the ticker is at rest.

In the embodiment illustrated in Fig. 2, the portion of the embodiment illustrated in Fig. 1 above the line a-a is replaced by a loop controlled mechanism in which the tape T travels from the ticker 66 to the idler 67, and from the idler 6'7 to the projecting station or projector 68. Between the ticker 66 and the idler 67 the tape cooperates with the finger 69 at the upper end of the link '70 pivotally connected at its lower end to the platform 71 of the mercury switch '72. The platform 71 is pivotally connected to rock about the pin 73 on the standard 74. mercury switch 72 is connected by the conductor 75 to the outlet plug 76, which outlet plug 76 is connected by the conductor 21, illustrated in Fig. 1, to the magnet 1'7. The other end of the mercury switch 72 is connected by the conductor 18, illustrated in Fig. 1, to the magnet 17.

In Fig. 3 there is illustrated another embodiment of theportion of the'embodiment illustrated below the line bb of Fig. 1. In the embodiment illustrated in Fig. 3, the conductors 41 and 42 are likewise connected to the magnetic clutch, in this case being connected to the contact rings '77 and '78 respectively of the magnet 79 which is fixedly mounted on the shaft 80. The shaft 80 has fixed thereon the worm wheel 81 in mesh with the worm 82 in the housing 83. The shaft 84 of the worm 82'has fixed thereon the pulley 85 which is connected to the pulley 86 by the belt 87. The pulley 86 is connected to the shaft 88 of the motor 89. The motor 89 has one of its poles connected to the outlet plug 90 by means of the conductor 91 and its other pole connected by the conductor 92, resistance 93 and conductor 94 to the outlet plug 90. On the shaft 80 there is freely mounted the tape drawing roller 95 which has a clutch disk 96 formed thereon for engagement by the magnet '79. For normally restraining the disk 96 from rotation by the magnet 79, the roller 95 is connected to the lever 97 fulcrumed at 98. The arm 99 of the lever 97 is connected by the spring 100 to the abutment 101 resiliently to restrain the disk 96 from rotation by the magnet '79.

With the embodiment illustrated in Fig. 2, the operation of the ticker forms slack in the tape T to permit the link '70 to descend and rock the mercury switch 72 to close the switch and energize the magnet 17 to attract the armature 22 in turn to cause the contact arm 34 to engage the contact arm 35. Thereupon, when the ticker stops and the roller 61 of the embodiment H 1 The trated in Fig. 1 continues to draw the tape T across the projector 68, it will take up the slack in the. tape '1 at the finger 69 and thereby raise the link 70 to rock the mercury switch '72 to open the current. When so opened, the magnet 17 will be de-energized, but before the contact 34 releases the contact 35, a short. period of delay will ensue as a result of the slow motion device including the piston 27 operating in the cylinder 28, such delay being sufficient to prevent the separation of the friction disk 45 from the magnet 43 if the interruption of the ticker were only momentary. As a result, it is obvious that the interrupt-ion in the movement of the tape will be considerably reduced and the movement of the tape only interrupted when the ticker is arrested for an extended period of time.

With the embodiment illustrated in Fig. 3, the magnetic clutch is interposed between the reduction gearing and the tape pulling roller 95. Ordinarily, it is preferred that the movement of the tape start gradually and come to rest gradually, in which case the portion of the embodiment shown below the line bb should be used where the reduction gearing is interposed between the magnet and the tape drawing roller, and consequently is effective due to its moment of inertia to extend the period of acceleration when starting and the period of retardation when stopping. On the other hand, there are instances where the period of acceleration and retardation must be reduced to a minimum in which case the embodiment illustrated in Fig. 1 would of course be preferred.

Itis obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention as set forth in the appended claims.

I claim:

1. The combination with a ticker having a tape feeding means, of a tape drawing roller, an electric motor, a clutch for operatively connecting the motor with said tape drawing roller, a magnetic device for actuating said clutch, and an electric switch for controlling said magnetic device, said electric switch being operatively associated with said ticker to be actuatable by said ticker.

2. The combination with a ticker, of a tape drawing device, an actuating device, a clutch for operatively connecting said actuating device to drive said tape drawing device, and magnetic controlling means associated with said ticker for actuating said clutch.

3. The combination with a ticker, of a tape I drawing device, an actuating device, a clutch for operatively connecting said actuating device to drive said tape drawing device, magnetic controlling means associated with said ticker for actuating said clutch into clutching engagement, and means cooperating with said magnetic controlling means to facilitate the gradual stopping of the tape drawing device and in turn the gradual acceleration of the tape drawing device.

4. The combination with a ticker, of a tape drawingdevice, an actuating device, a clutch for operatively connecting said actuating device to drive said tape drawing device, magnetic controlling means actuating said clutch into clutching engagement, an electric switch, and electric conductors operatively connecting said switch with said ticker in turn to control said magnetic controlling means.

5. The combination with a ticker, of a tape drawing device, an actuating device, a clutch for operatively connecting said actuating device to drive said tapedrawing device, magnetic actuating means for controlling said clutch, an electric switch, a magnet associated with said ticker for controlling said switch, a slow motion device for retarding the separation of said electric switch when once closed, and electric conductors for electrically connecting said switch to said magnetic controlling means.

6. The combination with a ticker, of a tape drawing roller, an electric motor, a clutch for drivingly connecting the motor with said tape drawing roller, a magnetic device when energized causing said clutch to engage, a spring for causing said clutch to disengage when said magnetic device is de-energized, and an electric switch for controlling said magnetic device, said electric 5 switch being operatively associated with said ticker to be actuated into circuit making position when said ticker operates in turn to cause said magnetic device to be energized.

7. The combination with a ticker, of tape draw- -ing means, an electric motor, a clutch for drivingly connecting said motor to drive said tape drawing means, an electric switch, a circuit operatively associated with said ticker to actuate said switch to make contact when said ticker opcrates, and a magnetic device when energized actuating said clutch to drivingly connect said tape drawing means with said motor, said switch being electrically connected to said magnetic device to cause said magnetic device to be energized when said switch makes contact.

8. The combination with a ticker, of a tape drawing device, an actuating device, a clutch for operatively connecting said actuating device with said tape drawing device, and a magnet and a circuit therefor including an electric switch operatively associated with said ticker for actuat ing said clutch to drivingly connect said actuating device with said tape drawing device.

9. The combination with a ticker, of a tape drawing device, an actuating device, a magnetic clutch for drivingly connecting said actuating device to drive said tape drawing device, and a cir,- cuit including magnetic controlling means opfi eratively associated with said ticker for control-:1, ling said clutch.

10. The combination with a ticker, of a tape drawing device, an actuating device, a magnetic 11. The combination with a ticker, of a tape drawing device, an actuating device, a clutch. for operatively connecting said actuating device to drive said tape drawing device, magnetic controlling means when energized actuating said clutch to drivingly connect said actuating device with said tape drawing device, an electric switch, and electric conductors operatively associating said switch with said ticker in turn to cause said magnetic controlling means to be energized and in turn to operate said clutch.

12. The combination with a ticker, of a tape drawing device, an actuating device, a clutch for operatively connecting said actuating device to drive said tape drawing device, magnetic controlling means when energized actuating said clutch to drivingly connect said actuating device with said tape drawing device, an electric switch, a circuit including a magnet operatively associated with said ticker for closing said switch when said ticker operates, a slow motion device for retarding the separation of said electric switch when once closed, and electric conductors for electrically connecting said switch to said magnetic controlling means.

13. In combination, a ticker adapted to intermittently eject a tape therefrom, means to feed including a pulling roller, an arm adapted to be actuated by said ticker, and means for utilizing the movement of said arm to control devices for causing the driving of said pulling roller.

' 14. In combination, a ticker adapted to intermittently eject a tape therefrom, means to feed said tape through a projection system, said means including a pulling roller, a restraining mechanism, an arm adapted to be actuated by said ticker, and means for translating the movement of said arm to means for driving said pulling roller and overcoming said restraining mechanism.

. AUGUST D. EITZEN.

, said tape through a projection system, said means 

